New Ripple Filter IC AN1281SSM ■ Overview 0.20+0.10 -0.05 0.20 The AN1281SSM is a ripple filter IC that rejects the ripple component superimposed on the regulator output. Use for the VCO bias of cellular phones improves C/N and S/N. 5 Unit: mm 0.10 M 1.60±0.10 1.20±0.10 4 0.20 ■ Features 1 2 3 0.50 0.50 1.00±0.10 1.60±0.10 0.08+0.10 -0.05 ● Small I/O voltage difference 0.60 max. 0 to 0.10 ● The mounting area is reduced by adopting the SSmini-type package ■ Applications 0.10 1 2 Seating plane 3 ● Cellular phones and others 5 4 SSMINI-5DA(Lead-free package) ■ Block Diagram VOUT 5 VIN 3 Load 0.1 µF Voltage control Starter/smoothing circuit Constant current 4 On/Off Switch 2 GND 4.7µF 1 CF 1 µF ¶ The products and specifications are subject to change without any notice. Please ask for the latest product standards to guarantee the satisfaction of your product requirements. 1 Kotari-yakemachi, Nagaokakyo, Kyoto 617-8520, Japan M00494AE Tel. (075) 951-8151 http://www.panasonic.co.jp/semicon/ New publication, effective from Dec. 6. 2001 ■ Absolute Maximum Ratings Parameter Symbol Rating Supply voltage VIN 4.5 V Supply current ICC 20 mA Power dissipation *2 PD 60 mW Operating ambient temperature *1 Topr -25 to +75 °C Storage temperature *1 Tstg -40 to +125 °C IO -15 mA Allowable application voltage for on/off pin *3 VON/OFF VIN V Allowable maximum capacitance for CF pin CF 10 µF Output current Unit Note) 1. Do not apply external currents or voltages to any pins not specifically mentioned. For circuit currents, '+' denotes current flowing into the IC, and '-' denotes current flowing out of the IC. 2. *1: Except for the power dissipation, the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: The power dissipation shown is the value for Ta = 75°C. *3: Do not over the supply voltage. ■ Recommended Operating Range Parameter Supply voltage Symbol Range VCC Unit 2.5 to 4.3 V ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Output voltage 1 VO1 VIN = 3.0 V, IOUT = -1 µA 2.62 2.82 V Output voltage 2 VO2 VIN = 3.0 V, IOUT = -15 mA 2.55 2.70 V Consumption current 1 ICC1 VIN = 3.0 V, IOUT = -1 µA -735 -565 µA Consumption current 2 ICC2 VIN = 3.0 V, IOUT = -15 mA -670 -515 µA Load regulation REGL VIN = 3.0 V, IOUT = -1 µA to -15 mA 0 120 220 mV Consumption current against IREG VIN = 3.0 V, IOUT = -1 µA to -15 mA 0 51 110 µA Ripple rejection ratio 1 RR1 VIN = 3 V± 0.1 V, IOUT = -15 mA f = 1 kHz 26.5 29.5 dB Ripple rejection ratio 2 RR2 VIN = 3 V± 0.1 V, IOUT = -15 mA f = 25 kHz 30.5 33.5 dB Ripple rejection ratio 3 RR3 VIN = 3 V± 0.1 V, IOUT = -15 mA f = 100 kHz 26.5 29.1 dB Consumption current at off IOFF VIN = 4.3 V, On/Off = 0 V 1 µA load change